It's pretty rare that comments will get a 5 in the first place. Beyond that, if 10 people "excercise their will" on a comment (that is to say: rate it), then those ten people might never agree on what comment is a five or not.
Another ~problem~ with 5's is that there is no incentive for 10 people to give a 5 comment another 5. There has been some talk about showing: (Score 4.85, 10 votes) for comments, which would be an interesting addition.
It's a problem with any rating system which takes public input- you get the average response, which usually won't trend towards 1 or 5, but instead closer to 3. For example, a comment of mine started at 1.00, and has finally settled at 2.15 ... probably where it belongs.
I actually think that the "trend towards average" phenomenon might warrant a change in mojo-
It seems like a lot of 1 ratings (not the average comment rating, but a lot of separate 1 ratings on any comment) should be a red flag. Also, a lot of 5 ratings (but not necessarily a "5" comment) should be a gold star. I'd have to think of it more, but I'm envisioning some sort of bell curve relating to mojo.
As a matter of fact, I'd be very interested to know what the "average" user's mojo is, and see if it's close to 3.00? Eh. Good stuff for scoop.kuro5hin.org.
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